Server update, 2018-11-01

This release includes a first implementation of genres – expect more information as a blog post in the following days. The search results page has been converted to React for every type of search except the edit search, which is implemented separately. The homepage, the ISWC page and the sidebars have been converted too. Additionally, the password hashes have been strengthened, external URL handlers have been updated as usual, and ten bugs have been fixed. Thanks to issue reporters chirlu, darwinx0r, jesus2099, hibiscuskazeneko, ravenworks, spellew, yeeeargh, and zastai for their input. The git tag is v-2018-11-01.